CVE-2026-66757

Published: Jul 27, 2026Modified: Aug 10, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: secalert@redhat.com (Secondary)

Description

A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service.

Affected (4)

Products: Gimp: Gimp · Redhat: Enterprise Linux

1 product

1 product

Enterprise Linux

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Gimp Gimp	Version 3.2.6
Redhat Enterprise Linux	Version 7.0
Redhat Enterprise Linux	Version 8.0
Redhat Enterprise Linux	Version 9.0

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (4)

https://access.redhat.com/security/cve/CVE-2026-66757

Source: secalert@redhat.com

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2507465

Source: secalert@redhat.com

Issue TrackingVendor Advisory

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494

Source: secalert@redhat.com

ExploitIssue TrackingVendor Advisory

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitIssue TrackingVendor Advisory

Timeline

No history available yet.